BSAC Pie/Tie

Tomorrow, I’m doing the final parts of the BSAC Instructor Courses, I have to teach any lesson up to Sports Diver, pass a theory test, and make a presentation on Atmospheric Pressure.  Am starting to feel that I haven’t put enough time towards this, however, I suspect that pretty much everyone feels the same way! With Luck by the end of tomorrow I’ll be an Instructor dude!